At midnight, the temperature was -8* f. at noon, the temperature was 23*f. which expression represents the increase in temperature?

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

This graph shows which inequality? a ≤ –3 a > –3 a ≥ –3 a < –3

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?